<template>
    <div>
        <!--面包屑导航区域-->
        <el-breadcrumb separator="/">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item><a href="/">用户管理</a></el-breadcrumb-item>
            <el-breadcrumb-item>用户列表</el-breadcrumb-item>
        </el-breadcrumb>
        <!--卡片视图区域-->
        <el-card >
            <!--搜索与视图区域-->
            <el-row :gutter="20">
                <el-col :span="8">
                    <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList()">
                        <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
                    </el-input>
                </el-col>
                <el-col :span="4">
                    <el-button type="primary" @click="addDialogVisible = true"><i class="el-icon-plus"></i>添加用户</el-button>
                </el-col>
            </el-row>
            <!--用户列表区域-->
            <el-table :data="userList" border stripe="">
                <el-table-column type="index" label="序号"></el-table-column>
                <el-table-column label="姓名" prop="username"></el-table-column>
                <el-table-column label="邮箱" prop="email"></el-table-column>
                <el-table-column label="电话" prop="mobile"></el-table-column>
                <el-table-column label="角色" prop="role_name"></el-table-column>
                <el-table-column label="状态" prop="mg_state">
                    <template v-slot="scope">
                        <el-switch v-model="scope.row.mg_state" @change="userStateChange(scope.row)" active-color="rgb(24, 144, 255)" inactive-color="#d3d4d6">
                        </el-switch>
                    </template>
                </el-table-column>
                <el-table-column label="操作" width="180px">
                    <template v-slot="scope">
                        <!--编辑按钮-->
                        <el-tooltip effect="dark" content="编辑" placement="top-start" :enterable="false">
                            <el-button type="primary" size="mini" icon="el-icon-edit" @click="showEditDialog(scope.row.id)"></el-button>
                        </el-tooltip>
                        <!--删除按钮-->
                        <el-tooltip effect="dark" content="删除" placement="top-start" :enterable="false">
                            <el-button type="danger" size="mini" icon="el-icon-delete" @click="removeUserById(scope.row.id)"></el-button>
                        </el-tooltip>
                        <!--分配角色按钮-->
                        <el-tooltip effect="dark" content="分配角色" placement="top-start" :enterable="false">
                            <el-button  type="warning" size="mini" icon="el-icon-setting" @click="setRole(scope.row)"></el-button>
                        </el-tooltip>
                    </template>
                </el-table-column>
            </el-table>
            <!--分页区域-->
            <el-pagination
                    background
                    @size-change="handleSizeChange"
                    @current-change="handleCurrentChange"
                    :current-page="queryInfo.pagenum"
                    :page-sizes="[1, 2, 5, 10]"
                    :page-size="queryInfo.pagesize"
                    layout="total, sizes, prev, pager, next, jumper"
                    :total="total">
            </el-pagination>

        </el-card>

        <!--添加用户的对话框-->
        <el-dialog
                title="添加用户"
                :visible.sync="addDialogVisible"
                width="50%" @close="addDialogClosed">
            <!--内容主体区-->
            <span>
                <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
                    <el-form-item label="用户名" prop="username">
                        <el-input v-model="addForm.username"></el-input>
                    </el-form-item>
                    <el-form-item label="密码" prop="password">
                        <el-input v-model="addForm.password"></el-input>
                    </el-form-item>
                    <el-form-item label="邮箱" prop="email">
                        <el-input v-model="addForm.email"></el-input>
                    </el-form-item>
                    <el-form-item label="手机" prop="mobile">
                        <el-input v-model="addForm.mobile"></el-input>
                    </el-form-item>
                </el-form>
            </span>
            <!--底部区域-->
            <span slot="footer" class="dialog-footer">
                <el-button @click="addDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="addUser">确 定</el-button>
            </span>
        </el-dialog>


        <!--修改用户的对话框-->
        <el-dialog
                title="修改用户"
                :visible.sync="editDialogVisible"
                width="50%" @close="editDialogClosed">
            <!--内容主体区-->
            <span>
                <el-form :model="editForm" :rules="addFormRules" ref="editFormRef" label-width="70px">
                    <el-form-item label="用户名">
                        <el-input v-model="editForm.username" disabled></el-input>
                    </el-form-item>
                    <el-form-item label="邮箱" prop="email">
                        <el-input v-model="editForm.email"></el-input>
                    </el-form-item>
                    <el-form-item label="手机" prop="mobile">
                        <el-input v-model="editForm.mobile"></el-input>
                    </el-form-item>
                </el-form>
            </span>
            <!--底部区域-->
            <span slot="footer" class="dialog-footer">
                <el-button @click="editDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="editUserInfo">确 定</el-button>
            </span>
        </el-dialog>

        <!--分配角色的对话框-->
        <el-dialog
                title="分配角色"
                :visible.sync="setRoleDialogVisble"
                width="50%">
            <div>
                <p>当前的用户:{{userInfo.username}}</p>
                <p>当前的角色:{{userInfo.role_name}}</p>
                <p>分配新角色
                    <el-select v-model="selectedRoleId" placeholder="请选择">
                        <el-option
                                v-for="item in rolesList"
                                :key="item.id"
                                :label="item.roleName"
                                :value="item.id">
                        </el-option>
                    </el-select>
                </p>
            </div>
            <span slot="footer" class="dialog-footer">
                <el-button @click="setRoleDialogVisble= false">取 消</el-button>
                <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
            </span>
        </el-dialog>

    </div>
</template>

<script>
    export default {
        data(){
            //验证邮箱的规则
            let checkEmail = (rule,value,callback)=>{
                /* 参数说明
                * rule 验证规则，vaule验证的值，callback回调函数
                * */
                //验证邮箱的正则表达式
                const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
                
                if (regEmail.test(value)){
                    //合法的邮箱
                    return callback();
                }

                callback(new Error('请输入合法的邮箱'));

            }

            //验证手机的规则
            var checkMobile = (rule,value,callback)=>{
                //验证手机号的的正则表达式
                const regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/

                if (regMobile.test(value)){
                    //合法的手机号
                    return callback();
                }

                callback(new Error('请输入合法的手机号'));
            }

            return {
              queryInfo:{
                  query:'',
                  //当前的页数
                  pagenum:1,
                  //当前每页显示多少条数据
                  pagesize:5
              },
              userList:[],
              total:0,
              //控制添加用户对话框的隐藏和显示
              addDialogVisible:false,
              //添加用户的表单数据
              addForm:{
                  username:'',
                  password:'',
                  email:'',
                  mobile:''

              },
              //添加用户表单数据的规则
              addFormRules:{
                  //验证用户名是否合法
                  username:[
                      { required: true, message: '请输入用户名', trigger: 'blur' },
                      { min: 3, max: 10, message: '用户名长度在 3 到 10 个字符之间', trigger: 'blur' }
                  ],
                 // 验证密码是否合法
                  password:[
                      { required: true, message: '请输入密码', trigger: 'blur' },
                      { min: 6, max: 15, message: '密码长度在 6 到 15 个字符之间', trigger: 'blur' }
                  ],
                  email:[
                      { required: true, message: '请输入邮箱', trigger: 'blur'},
                      { validator:checkEmail,trigger: 'blur'}
                  ],
                  mobile:[
                      { required: true, message: '请输入手机号', trigger: 'blur' },
                      { validator:checkMobile,trigger: 'blur'}
                  ],


              },
                //查询到的用户的信息对象
                editForm:{
                },
                //控制修改用户对话框的隐藏和显示
                editDialogVisible:false,

                //控制分配角色对话框的显示与隐藏
                setRoleDialogVisble:false,

                //需要被分配角色的用户信息
                userInfo:{},
                //所有角色的数据列表
                rolesList:{},
                //已选中的角色ID值`
                selectedRoleId:''

            }
        },
        created(){
            this.getUserList();

        },
        methods:{
            async getUserList(){
                const {data:res} =  await this.$http.get('users',{
                    params:this.queryInfo
                });

                if (res.meta.status !== 200) {
                    return this.$message.error('获取用户列表失败');
                }else{
                    this.userList = res.data.users
                    this.total = res.data.total

                }

                console.log(res);
            },
            //监听pagesize改变的事件
            handleSizeChange(newSize){
                console.log(newSize);
                this.queryInfo.pagesize = newSize;
                this.getUserList();
            },
            //监听页码值改变的函数
            handleCurrentChange(newPage){
                console.log(newPage);
                this.queryInfo.pagenum = newPage;
                this.getUserList();
            },
            //switch状态改变函数
            async userStateChange(userInfo){

                const {data:res} = await this.$http.put(`users/${userInfo.id}/state/${userInfo.mg_state}`)

                console.log(res);
                
                if (res.meta.status !== 200){
                    userInfo.mg_state = !userInfo.mg_state;
                    return this.$message.error('更新状态失败');
                }
                 return this.$message.success('更新状态成功');

            },
            //监听添加用户对话框的关闭事件
            addDialogClosed(){
                //清除表单
                this.$refs.addFormRef.resetFields();
            },
            //点击确定，添加新用户
            async addUser(){
                this.$refs.addFormRef.validate(valid=>{
                    if (!valid) return;
                })

                const {data:res} = await this.$http.post('users',this.addForm)
                if (res.meta.status !==201) {
                    this.$message.error('添加用户失败！')
                }
                this.$message.success('添加用户成功！')
                //隐藏对话框
                this.addDialogVisible = false;
                //重新获取数据
                this.getUserList();
            },
            //弹出编辑用户对话框
            async showEditDialog(id){
                console.log(id);
                const {data:res} = await this.$http.get('users/' + id)
                console.log(res);
                if (res.meta.status !==200){
                    return this.$message.error('查询用户数据失败!');
                }

                this.editForm = res.data
                this.editDialogVisible = true;
            },
            //监听添修改用户对话框的关闭事件
            editDialogClosed(){
                //清除表单
                this.$refs.editFormRef.resetFields();
                this.editForm = {};
            },
            //修改用户信息并提交
            editUserInfo(){
                this.$refs.editFormRef.validate(async valid=>{
                    if (!valid) return;

                    //发起修改用户信息的数据请求
                    const {data:res} = await this.$http.put('users/' + this.editForm.id,{
                        email:this.editForm.email,
                        mobile:this.editForm.mobile
                    });

                    if (res.meta.status !==201) {
                        this.$message.error('更新用户失败！')
                    }


                    //隐藏对话框
                    this.editDialogVisible = false;

                    //重新获取数据
                    this.getUserList();

                    this.$message.success('更新用户成功！')

                })

            },
            async removeUserById(id){
                //询问客户是否确认删除
                const res = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
                    confirmButtonText: '确定',
                    cancelButtonText: '取消',
                    type: 'warning'
                }).catch(err => err)
                //如果用户确认删除，则返回值为字符串 confirm
                //如果用户取消删除，则返回值为字符串 cancel
                if (res !== 'confirm'){
                    return this.$message.info('已经取消了删除！');
                }

                const {data:delRes} = await this.$http.delete('users/' + id)
                if (delRes.meta.status !==200) {
                    return this.$message.error('删除用户失败！');
                }

                this.$message.success('删除用户成功！')
                this.getUserList();

            },
            async setRole(userInfo){
                this.userInfo = userInfo;
                console.log(userInfo);

                //在展示对话框之前，获取所有角色列表
                const {data:res} = await this.$http.get(`roles`);

                if (res.meta.status !==200){
                    return this.$message.error('获取角色列表失败！');
                }

                this.rolesList = res.data

                this.setRoleDialogVisble = true;
            },
            async saveRoleInfo(){
                console.log(this.userInfo.id);
                if (!this.selectedRoleId) {
                    return this.$message.error('请选择要分配的角色');
                }

                const {data:res} = await this.$http.put(`users/${this.userInfo.id}/role`,{
                    rid:this.selectedRoleId
                });

                console.log(res)

            }
        }
    }
</script>

<style lang="less" scoped>
    .el-icon-plus{
        position: relative;
        right: 3px;
    }
</style>